Power Diagnostix state of the art PD online monitoring system fullfills all requirements of a reliable PD prewarning system. The GISmonitor is a unique measurement system in the range of substation control and surveillance.

Monitoramento on-line

The new design of the GISmonitor builds on 12 years experience in online PD monitoring on rotating machines, transformers, cables, and especially GIS systems. It combines proven technology of the ICMmonitor, as it is installed now on more than 400 objects, with new processor technology and embedded hardware capabilities. The hardware core of the system has been fully redesigned and optimized for parallel, real time PD acquisition on multiple channels. Any UHF signal can be detected and digitized within micro seconds. A separation of PD events from external disturbances or internal switching pulses is provided by the advanced GISmonitor software.

Each acquisition unit operates fully stand alone to monitor all PD sensors in one GIS PD monitoring system in parallel. A remote computer reads all data of the instruments via the high speed fiber optic LAN.

External interfaces to IEC61850 or other overall monitoring systems available on request

Low maintenance and user friendly monitoring system

Extensibility and scalable

This online PD monitoring system has been designed to fit to all currently known UHF sensors available on the market for GIS systems. Embedded UHF sensors are as well suited as retrofit external ones. Strong transients will be blocked by a special input protection unit (IPU2B). All other common UHF signals are converted into lower frequencies by a special pre-processing matching unit (FCU2 – frequency converter unit).